CN110540289A - Anaerobic hydrolysis reactor for sewage sludge - Google Patents
Anaerobic hydrolysis reactor for sewage sludge Download PDFInfo
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- CN110540289A CN110540289A CN201910858987.3A CN201910858987A CN110540289A CN 110540289 A CN110540289 A CN 110540289A CN 201910858987 A CN201910858987 A CN 201910858987A CN 110540289 A CN110540289 A CN 110540289A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
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Abstract
The invention provides a sewage sludge anaerobic hydrolysis reactor, which comprises a tank body, wherein a water inlet area, a filler area and a sludge-water separation area are sequentially arranged in the tank body along the sewage inlet direction, the water inlet area is provided with a water inlet and a sludge inlet, a plurality of filler layers are arranged in the filler area, the cross sections of the filler layers, which are vertical to the sewage inlet direction, are in a continuous fold shape, a sludge-water separator, a sludge collecting section and a water outlet section are arranged in the sludge-water separation area, the sludge-water separator is respectively communicated with the sludge collecting section and the water outlet section, the water outlet section is also provided with a water outlet, the sludge collecting section is also provided with a sludge outlet, and the. The anaerobic hydrolysis reactor for sewage and sludge provided by the invention can be used for anaerobic hydrolysis fermentation of domestic and industrial sewage to improve the biodegradability of sewage, can also be used for anaerobic hydrolysis fermentation of biochemical sludge with good fluidity to improve the reduction rate of sludge, or can be used for synergistic anaerobic hydrolysis fermentation of sewage and sludge.
Description
Technical Field
The invention belongs to the technical field of environment-friendly sewage treatment, and relates to a sewage sludge anaerobic hydrolysis reactor.
background
In the process of treating domestic sewage and industrial wastewater, biochemical treatment can not be separated generally, and two main biochemical treatment modes are available, wherein one mode is aerobic biochemical treatment, the other mode is anaerobic biochemical treatment, the aerobic biochemical treatment is to culture aerobic microorganisms in an aerobic biochemical reactor, the aerobic microorganisms grow by using pollutant molecules which are easy to degrade by small molecules so as to degrade pollutants, but the aerobic biochemical treatment has poor effect on the pollutant molecules which are difficult to biochemically degrade by large molecules, and the anaerobic biochemical treatment is to grow anaerobic microorganisms in an anaerobic reactor, the anaerobic microorganisms catalyze and hydrolyze the large molecular substances into small molecular substances by using extracellular enzymes of microorganisms while growing by using the small molecular substances, such as amylase can catalyze and hydrolyze starch substances, protease can catalyze and hydrolyze protein substances, cellulase can catalyze and hydrolyze cellulose, and the large molecular substances are converted into the small molecular substances after hydrolysis, therefore, the anaerobic hydrolysis reactor can be further degraded anaerobically or aerobically, and can improve the biochemical degradability of the refractory substances and convert the refractory substances into easily degradable substances besides degrading pollutants.
There are three types of anaerobic hydrolysis reactors commonly used. The first type is a mechanical mixing type, a stirrer is arranged in a reactor, anaerobic microorganisms of the reactor are not easy to enrich and are easy to take away from discharged water, the hydrolysis effect is poor, a sedimentation tank is often arranged behind the reactor to reflux precipitated sludge, but the traditional horizontal sedimentation tank or radial sedimentation tank has low separation efficiency and large area, and although the inclined plate or inclined tube sedimentation tank has high separation efficiency, a sludge collection area is positioned below the inclined plate or inclined tube, so that bottom sludge collection is difficult to clean; the second type is an up-flow anaerobic sludge bed (UASB), water is fed from the bottom of a reactor, anaerobic microorganisms form a sludge layer under the action of upward water flow, a water, gas and solid three-phase separator is arranged at the upper part of the reactor, and sludge returns to the reactor after passing through the three-phase separator, so that the microorganisms are enriched, the amount of the microorganisms is large, the anaerobic effect is good, but if the anaerobic reaction is only stopped at a hydrolysis acidification stage, and a methane production stage is not reached, the sludge suspension effect of the UASB is poor; the third type is an anaerobic filler reactor, namely, a filler is added in the anaerobic reactor, microorganisms grow and enrich on the surface of the filler, cannot be carried out along with effluent, and cannot be suspended due to no gas production.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an anaerobic sewage sludge hydrolysis reactor, and more particularly, to an anaerobic filler hydrolysis reactor combined with a novel inclined plate or inclined tube sedimentation sludge-water separator, wherein a novel filler layer with a continuous corrugated cross section is adopted, so that a large specific surface area has a strong enrichment effect on microorganisms, and a biofilm can be effectively prevented from being blocked, and a sludge collection area of the novel inclined plate or inclined tube sludge-water separator is located on a side surface of the inclined plate or inclined tube, thereby facilitating sludge discharge or cleaning.
In order to achieve the above and other related objects, the present invention provides a sewage sludge anaerobic hydrolysis reactor, which comprises a tank body, wherein a water inlet region, a filler region and a sludge-water separation region are sequentially arranged in the tank body along a sewage inlet direction, the water inlet region is provided with a water inlet and a sludge inlet, a plurality of filler layers are arranged in the filler region, the cross section of each filler layer, which is perpendicular to the sewage inlet direction, is in a continuous fold shape, a sludge-water separator, a sludge collection section and a water outlet section are arranged in the sludge-water separation region, the sludge-water separator is respectively communicated with the sludge collection section and the water outlet section, the water outlet section is further provided with a water outlet, the sludge collection section is further provided with a sludge outlet, and the sludge outlet is communicated with.
Preferably, the water inlet area and the filler area are sequentially arranged from bottom to top along the sewage inlet direction.
Preferably, be equipped with at least one branch pipe of intaking in the district of intaking, the branch pipe of intaking is linked together with water inlet, mud import respectively, be equipped with at least one distributing pipe on the branch pipe of intaking for respectively with sewage through the water inlet, mud pass through the mud import by the branch pipe of intaking mix the back input intake district in, and input the filler district through the distributing pipe.
More preferably, a plurality of the water inlet branch pipes are parallel to each other, and the distance between the adjacent water inlet branch pipes is equal.
More preferably, the distribution pipes on the same water inlet branch pipe are parallel, and the distances between the adjacent distribution pipes on the same water inlet branch pipe are equal.
Preferably, gaps are arranged between the filler layers in parallel and between the adjacent filler layers.
Preferably, a plurality of said layers of packing are aligned at both ends.
Preferably, the filler layer is filled with a material selected from one or more of polyethylene, polypropylene, ethylene-propylene copolymer, glass fiber reinforced plastic and stainless steel.
preferably, the unit volume surface area (specific surface area) of the filler layer is 50-200m 2/m 3.
Preferably, the surface of the filler layer is provided with a biological membrane.
More preferably, the biofilm is an anaerobic biofilm.
preferably, a single corrugation of the continuous corrugation is selected from one of a wave shape, a groove shape or a zigzag shape.
More preferably, the height of a single corrugation in the continuous corrugations is 1-10 mm.
Further preferably, when a single corrugation in the continuous corrugation is respectively in a waveform shape, a groove shape or a sawtooth shape, the wave height of the waveform shape, the groove height of the groove shape and the tooth height of the sawtooth shape are all 1-10 mm.
More preferably, the straight-line distance between the peaks of the adjacent folds in the continuous folds is 2-20 mm.
Further preferably, when a single corrugation in the continuous corrugation is respectively in a waveform shape, a groove shape or a sawtooth shape, the wave pitch between adjacent waveform shapes, the groove pitch between adjacent groove shapes and the tooth pitch between adjacent sawtooth shapes are all 2-20 mm.
Preferably, the straight line distance between the adjacent packing layers is 20-200 mm.
More preferably, when the continuous corrugated cross section of the packing layer is corrugated, grooved or zigzag, the straight line distance between corresponding corrugations, grooves or zigzag in the adjacent packing layer is 20-200 mm.
Preferably, the mud-water separator comprises a plurality of inclined mud-water separation layers, and gaps are arranged between the mud-water separation layers in parallel and adjacent to each other.
More preferably, the two ends of the mud-water separation layers are aligned.
More preferably, the mud-water separation layer is an inclined plate or an inclined pipe.
Further preferably, the vertical cross-sectional shape of the inclined tube is a quadrangle or a hexagon.
More preferably, the material of the mud-water separation layer is selected from one or more of polyethylene, polypropylene, ethylene-propylene copolymer, glass fiber reinforced plastic and stainless steel.
More preferably, the horizontal inclination angle of the mud-water separation layer is 40-70 degrees, and the horizontal inclination angle is declined from the side close to the water outlet to the side close to the sludge outlet.
More preferably, the vertical distance between the adjacent mud-water separation layers is 20-100 mm.
Preferably, the top end of the mud-water separator is higher than the bottom end of the water inlet of the mud-water separation zone, and the top end of the mud-water separator is higher than the water outlet.
More preferably, the top end of the mud-water separator is 300-500mm higher than the bottom end of the water inlet of the mud-water separation zone.
Preferably, the sludge collecting section is arranged on one side of the sludge-water separator.
preferably, a sludge discharge port is arranged at the bottom of the sludge collecting section.
Preferably, a sludge return pump is further arranged on the pipeline between the sludge outlet and the sludge inlet.
Preferably, the bottom of the water outlet section is inclined and is positioned on the same inclined plane as the bottom of the mud-water separator, the bottom of the water outlet section is higher than the bottom of the mud-water separator, and the bottom of the mud-water separator is higher than the bottom of the mud collecting section.
the invention further provides a using method of the sewage sludge anaerobic hydrolysis reactor, which comprises the following steps:
1) Respectively mixing sewage from a water inlet and sludge from a sludge inlet through a water inlet branch pipe, then flowing into a water inlet area of the tank body, and then flowing into a plurality of packing layers in a packing area through a distribution pipe to treat pollutants in the sewage;
2) The mixture of water after handling and mud flows into the mud-water separation zone and separates, water is discharged through the delivery port, mud falls into mud collection section bottom and/or falls into mud collection section bottom in the play water section through depositing behind a plurality of mud-water separation layers in mud-water separator through the sediment in mud collection section, and the district of intaking is flowed back through the mud import by the mud export again.
Preferably, in the step 1), the pipe diameter of the water inlet is 50-1000mm, and the water flow speed of the water inlet is 1-3 m/s.
More preferably, the pipe diameter of the water inlet is 200-500mm, and the water flow speed of the water inlet is 1.5-3 m/s.
Preferably, in the step 1), the pipe diameter of the water inlet branch pipe is 50-300mm, the number of the water inlet branch pipes is 1-20, and the water flow speed of the water inlet branch pipe is 1-3 m/s.
More preferably, the pipe diameter of the water inlet branch pipe is 50-200mm, the number of the water inlet branch pipes is 2-10, and the water velocity of the water inlet branch pipe is 2-3 m/s.
Preferably, in the step 1), the pipe diameter of the distribution pipe is 20-100mm, the number of the distribution pipes is 4-100, and the water flow velocity of the distribution pipes is 1-3 m/s.
More preferably, the pipe diameter of the distribution pipe is 20-50mm, the number of the distribution pipes is 4-50, and the water flow speed of the distribution pipes is 2-3 m/s.
Preferably, in the step 1), the surface flow velocity of the pool body is 1-5 m/h.
Preferably, in the step 2), the surface flow velocity of the mud-water separator is 1-10 m/h.
preferably, in the step 2), the pipe diameter of the water outlet is 50-1000mm, and the water flow speed of the water outlet is 0.5-2.5 m/s.
More preferably, the pipe diameter of the water outlet is 50-500mm, and the water flow speed of the water outlet is 0.5-1.5 m/s.
Preferably, in the step 2), the sludge is driven by the sludge return pump to return to the water inlet area from the sludge outlet through the sludge inlet.
More preferably, the flow rate of the sludge reflux pump is 10-1000 m 3/h.
As mentioned above, the anaerobic hydrolysis reactor for sewage and sludge provided by the invention can be used for anaerobic hydrolysis fermentation of domestic and industrial sewage to improve the biodegradability of sewage, can also be used for anaerobic hydrolysis fermentation of biochemical sludge with better fluidity to improve the reduction rate of sludge, or can be used for synergistic anaerobic hydrolysis fermentation of sewage and sludge.
Drawings
FIG. 1 is a schematic view showing the overall structure of a sewage sludge anaerobic hydrolysis reactor according to the present invention.
FIG. 2 is a schematic structural diagram of a packing layer with a continuous waveform cross section in the anaerobic hydrolysis reactor for sewage sludge according to the present invention.
FIG. 3 is a schematic structural diagram of a packing layer with a continuous groove-shaped cross section in the sewage sludge anaerobic hydrolysis reactor.
FIG. 4 is a schematic structural view of a packing layer with a continuous sawtooth-shaped cross section in the anaerobic sewage sludge hydrolysis reactor of the present invention.
FIG. 5 is a schematic view showing the structure of a packing layer with continuous wave-shaped adjacent cross-sections in the anaerobic hydrolysis reactor for sewage sludge according to the present invention.
FIG. 6 is a schematic structural diagram of a packing layer with continuous groove-shaped adjacent cross sections in the anaerobic hydrolysis reactor for sewage sludge.
FIG. 7 is a schematic structural view of a packing layer with continuous saw-tooth-shaped adjacent cross sections in the anaerobic hydrolysis reactor for sewage sludge according to the present invention.
FIG. 8 is a schematic diagram showing the structure of an adjacent sludge-water separation layer in the anaerobic sewage sludge hydrolysis reactor according to the present invention.
Reference numerals
| 1 | Tank body |
| 2 | Water intake zone |
| 21 | Water inlet |
| 22 | Sludge inlet |
| 23 | Water inlet branch pipe |
| 24 | Distributing pipe |
| 3 | packing area |
| 31 | Packing layer |
| 4 | Mud-water separation area |
| 41 | Mud-water separator |
| 411 | Mud-water separation layer |
| 42 | Mud collecting section |
| 421 | Sludge outlet |
| 422 | Sludge discharge port |
| 43 | water outlet section |
| 431 | Water outlet |
| 5 | Sludge reflux pump |
| H | Height of single fold |
| L | Linear distance between adjacent pleat tips |
| D | Linear distance between adjacent packing layers |
| E | Vertical distance between adjacent mud-water separation layers |
Detailed Description
the following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1 to 8. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The invention provides a sewage sludge anaerobic hydrolysis reactor, as shown in figure 1, which comprises a tank body, wherein a water inlet area, a filler area and a sludge-water separation area are sequentially arranged in the tank body along the sewage inlet direction, the water inlet area is provided with a water inlet and a sludge inlet, a plurality of filler layers are arranged in the filler area, the cross sections of the filler layers, which are vertical to the sewage inlet direction, are in a continuous fold shape, a sludge-water separator, a sludge collecting section and a water outlet section are arranged in the sludge-water separation area, the sludge-water separator is respectively communicated with the sludge collecting section and the water outlet section, the water outlet section is also provided with a water outlet, the sludge collecting section is also provided with a sludge outlet, and the sludge outlet is communicated with the sludge inlet.
In a preferred embodiment of the present application, as shown in fig. 1, the water inlet region and the filler region are sequentially arranged from bottom to top along the sewage inlet direction. Thereby forming an upward flow.
In the preferred embodiment of this application, as shown in fig. 1, it is equipped with at least one branch pipe of intaking in the district to intake, the branch pipe of intaking is linked together with water inlet, mud import respectively, be equipped with an at least distributing pipe on the branch pipe of intaking for respectively with sewage through water inlet, mud pass through the mud import and mix the back input intake district by the branch pipe of intaking, and through the distributing pipe input filler district.
In a further preferred embodiment, as shown in fig. 1, a plurality of the water inlet branch pipes are parallel to each other, and the distances between the adjacent water inlet branch pipes are equal. So as to facilitate uniform water inlet.
In a further preferred embodiment, as shown in fig. 1, the distribution pipes on the same branch inlet pipe are parallel to each other, and the distances between the adjacent distribution pipes on the same branch inlet pipe are equal. The water inflow is convenient to count.
The distance is the shortest distance between both sides of the measurement distance.
in a preferred embodiment of the present application, a plurality of said packing layers are fixed by a frame. The frame attachment is in a manner known in the art.
in the preferred embodiment of the present application, as shown in fig. 5-7, the packing layers are parallel to each other with gaps between adjacent packing layers.
in the preferred embodiment of the present application, as shown in FIGS. 5-7, a plurality of the packing layers are aligned at both ends.
In the preferred embodiment of the present application, the filler layer is filled with a material selected from one or more of polyethylene, polypropylene, ethylene-propylene copolymer, glass fiber reinforced plastic, and stainless steel.
In a preferred embodiment of the present application, the filler layer has a surface area per unit volume (specific surface area) of 50 to 200m2/m 3. The packing layer has continuous corrugated section distribution to obtain great specific surface area and thus great microbe enriching effect.
In a preferred embodiment of the present application, the surface of the filler layer is provided with a biofilm.
In a further preferred embodiment, the biofilm is an anaerobic biofilm.
The anaerobic biological membrane is used as a membrane-shaped microorganism and has extremely strong adsorption effect on pollutants in sewage, after the pollutants are adsorbed by the biological membrane, micromolecular substances are absorbed and utilized by the microorganism, and macromolecular substances are hydrolyzed and acidified under the catalytic action of microbial hydrolase and converted into micromolecular substances, and then the micromolecular substances can be utilized by the microorganism in the tank body or degraded by other subsequent biochemical treatment modes.
In a preferred embodiment of the present application, as shown in fig. 2 to 4, a single corrugation of the continuous corrugations is selected from one of a wave shape, a trough shape or a zigzag shape. Ensuring that the contact area with the sewage is larger.
In a preferred embodiment of the present application, the height of a single corrugation in the continuous corrugations is 1 to 10 mm. Specifically, as shown in fig. 2, when a single corrugation in the continuous corrugation is a waveform, the wave height of the waveform is 1-10 mm. As shown in FIG. 3, when a single corrugation in the continuous corrugation is in the shape of a groove, the height of the groove is 1-10 mm. As shown in FIG. 4, when a single corrugation in the continuous corrugation is zigzag, the zigzag tooth height is 1-10 mm.
In a preferred embodiment of the present application, a linear distance between vertexes of adjacent corrugations in the continuous corrugation is 2-20 mm. Specifically, as shown in fig. 2, when a single corrugation is a corrugation in the continuous corrugation, the corrugation distance between adjacent corrugations is 2-20 mm. As shown in FIG. 3, when a single corrugation is a groove shape in the continuous corrugation, the distance between adjacent groove shapes is 2-20 mm. The groove distance refers to a straight line distance from the center position of one groove top to the center position of the adjacent other groove top. As shown in FIG. 4, when a single corrugation is a sawtooth shape in the continuous corrugation, the pitch between adjacent sawtooth shapes is 2-20 mm.
In the preferred embodiment of the application, the straight line distance between the adjacent packing layers is 20-200 mm. Specifically, as shown in fig. 5, when the corrugation is a wave shape in the continuous corrugation cross section of the packing layer, the straight line distance between corresponding corrugations in adjacent packing layers is 20-200 mm. As shown in fig. 6, when the corrugated shape of the continuous corrugated cross section of the filler layer is a groove shape, the straight line distance between corresponding groove shapes of adjacent filler layers is 20-200 mm. As shown in fig. 7, when the continuous corrugated cross section of the packing layer has a corrugated shape, the straight line distance between the corresponding corrugated shapes in the adjacent packing layers is 20 to 200 mm.
In a preferred embodiment of the present application, as shown in fig. 1 and 8, the mud-water separator comprises a plurality of inclined mud-water separation layers, and the mud-water separation layers are parallel and are provided with gaps between the adjacent mud-water separation layers. In a further preferred embodiment, the plurality of mud-water separating layers are fixed by a frame. The frame attachment is in a manner known in the art. Due to the fact that the inclined structure is arranged, the mud-water separator is convenient to discharge into the mud collecting section through dead weight precipitation through the sludge based on different densities of water and the sludge, and the speed of mud-water separation can be increased.
In a further preferred embodiment, as shown in fig. 1 and 8, the two ends of the mud-water separation layers are aligned.
In a further preferred embodiment, the mud-water separation layer is an inclined plate or an inclined tube. Specifically, the vertical cross-sectional shape of the inclined tube is a quadrangle or a hexagon.
in a further preferred embodiment, the material of the mud-water separation layer is selected from one or more of polyethylene, polypropylene, ethylene-propylene copolymer, glass fiber reinforced plastic and stainless steel.
In a further preferred embodiment, as shown in fig. 1, the horizontal inclination angle of the mud-water separation layer is 40-70 degrees, and the mud-water separation layer declines from the near water outlet side to the near sludge outlet side.
In a further preferred embodiment, as shown in FIG. 1, the vertical distance between the adjacent mud-water separation layers is 20-100 mm.
In a preferred embodiment of the present application, as shown in fig. 1, the top end of the mud-water separator is higher than the bottom end of the water inlet of the mud-water separation zone, and the top end of the mud-water separator is higher than the water outlet. Therefore, after the mixture of the water and the sludge treated by the plurality of packing layers in the packing area flows into the mud-water separation area and is blocked by the mud-water separator, most of the sludge with high density can be self-precipitated in the sludge collection section, and the separation of the water and the sludge is realized. Meanwhile, the flow speed of the mixture of water and sludge after the sludge separation self-precipitated in the sludge collecting section is accelerated due to the blocking of the sludge-water separator, wherein the amount of the sludge with high density contained in the mixture of water and sludge is reduced compared with that in the prior art, so that the water and the sludge are effectively separated, and the residual sludge with high density can flow into the sludge collecting section through gaps among a plurality of sludge-water separation layers on the sludge-water separator according to the self-precipitation, so that the separation speed is accelerated.
In a further preferred embodiment, the top end of the mud-water separator is 300-500mm higher than the bottom end of the water inlet of the mud-water separation zone.
In a preferred embodiment of the present application, as shown in fig. 1, the sludge-collecting section is provided at one side of the sludge-water separator. Is convenient for discharging the sludge and cleaning the sludge.
In the preferred embodiment of the present application, as shown in fig. 1, a sludge discharge port is provided at the bottom of the sludge collecting section. Used for discharging partial sludge.
In a preferred embodiment of the present application, as shown in fig. 1, a sludge reflux pump is further disposed on the pipeline between the sludge outlet and the sludge inlet. Specifically, the sludge reflux pump is selected from one of a centrifugal pump, a screw pump or a rotor pump.
In a preferred embodiment of the present application, as shown in fig. 1, the bottom of the water outlet section is inclined and is located on the same inclined plane as the bottom of the mud-water separator, the bottom of the water outlet section is higher than the bottom of the mud-water separator, and the bottom of the mud-water separator is higher than the bottom of the mud collecting section. Therefore, the mixture of water and sludge flowing through the sludge collecting section is ensured, and when the other part of water in the mixture is separated from the sludge through the self-precipitation of the sludge with high density in the water outlet section, the sludge can smoothly flow into the sludge collecting section through gaps among a plurality of sludge-water separation layers on the sludge-water separator.
The invention further provides a using method of the sewage sludge anaerobic hydrolysis reactor, which comprises the following steps:
1) Respectively mixing sewage from a water inlet and sludge from a sludge inlet through a water inlet branch pipe, then flowing into a water inlet area of the tank body, and then flowing into a plurality of packing layers in a packing area through a distribution pipe to treat pollutants in the sewage;
2) The mixture of water after handling and mud flows into the mud-water separation zone and separates, water is discharged through the delivery port, mud falls into mud collection section bottom and/or falls into mud collection section bottom in the play water section through depositing behind a plurality of mud-water separation layers in mud-water separator through the sediment in mud collection section, and the district of intaking is flowed back through the mud import by the mud export again.
In the preferred embodiment of the present application, in step 1), the pipe diameter and the water flow speed of the water inlet are determined according to the amount of treated water, so as to ensure that sewage effectively flows into the tank body. Specifically, the pipe diameter of the water inlet is 50-1000mm, preferably 200-500 mm; the water flow speed of the water inlet is 1-3m/s, and preferably 1.5-3 m/s.
In the preferred embodiment of the present application, in step 1), the water inlet branch pipe determines the quantity, pipe diameter and water flow speed thereof according to the amount of the treated water flowing in from the water inlet, so as to ensure that the sewage effectively flows into the water inlet area. Specifically, the pipe diameter of the water inlet branch pipe is 50-300mm, preferably 50-200 mm; the number of the water inlet branch pipes is 1-20, preferably 2-10; the water flow speed of the water inlet branch pipe is 1-3m/s, and preferably 2-3 m/s.
In a preferred embodiment of the present application, in step 1), the number, pipe diameter and water flow speed of the distribution pipes are determined according to the amount of the treated water flowing from each water inlet branch pipe, so as to ensure that the sewage effectively flows into the filling area. Specifically, the pipe diameter of the distribution pipe is 20-100mm, preferably 20-50 mm; the number of the distribution pipes is 4-100, preferably 4-50; the water flow speed of the distribution pipe is 1-3m/s, and preferably 2-3 m/s.
In a preferred embodiment of the present application, in step 1), the surface flow velocity of the pool body is 1-5 m/h. The surface flow rate is the ratio of the amount of water treated per unit time to the cross-sectional area of the reactor.
In a preferred embodiment of the present application, in step 1), the pollutants in the wastewater are treated by anaerobic microorganisms in the biofilm and sludge on the surface of the filler layer.
in a preferred embodiment of the present application, in the step 2), the surface flow velocity of the mud-water separator is 1-10 m/h.
In a preferred embodiment of the present application, in step 2), the pipe diameter and the water flow speed of the water outlet are determined according to the amount of treated water flowing into the water outlet section from the filler zone, so as to ensure that the treated water is effectively discharged out of the tank body. Specifically, the pipe diameter of the water outlet is 50-1000mm, preferably 50-500 mm; the water flow speed of the water outlet is 0.5-2.5m/s, preferably 0.5-1.5 m/s.
In a preferred embodiment of the application, in the step 2), the sludge is driven by the sludge return pump to return from the sludge outlet to the water inlet area through the sludge inlet. Specifically, the flow rate of the sludge reflux pump is 10-1000 m 3/h.
Example 1
A user flows sewage containing printing and dyeing wastewater into the tank body through the water inlet according to the sewage sludge anaerobic hydrolysis reactor shown in figure 1, the sewage treatment water amount is 200m3/h, the pipe diameter of the water inlet is 200mm, and the water flow speed of the water inlet is 1.8 m/s. The surface flow velocity of the tank body is designed to be 3m/h, and the area of the tank body is designed to be 133m 2.
Firstly, sewage flows into a water inlet area of a tank body through a water inlet branch pipe, simultaneously, sludge flows into the water inlet area through the water inlet branch pipe from a sludge inlet, the sewage and the sludge are mixed in the water inlet branch pipe, the designed sludge return flow is 200m3/h, and the total flow of the sewage and the sludge is 400m 3/h. The pipe diameter of the water inlet branch pipes is 100mm, and when the set water flow speed of the water inlet branch pipes is 2m/s, the number of the water inlet branch pipes is 7.
Then, the mixture of sewage and sludge flows into a filling area through distribution pipes, the water inflow of each water inlet branch pipe is 57m3/h, the pipe diameter of each distribution pipe is 32mm, and when the set water flow speed of each distribution pipe is 2m/s, the number of the distribution pipes is 10.
Moreover, the mixture of sewage and mud is in the filler layer of a plurality of in the filler district, the pollutant in the sewage is handled by the anaerobic microorganisms in biofilm and the mud in the filler layer surface, wherein, the biofilm is as membranous microorganism, has extremely strong adsorption to the pollutant in the sewage, the pollutant is by the biofilm absorption back, the micromolecule material is absorbed and utilized by the microorganism, macromolecular material takes place hydrolytic acidification under the catalytic action of microorganism hydrolase, change into micromolecule material, can then be utilized by the microorganism in the cell body or degrade by other subsequent biochemical treatment modes. The section of the packing layer, which is vertical to the sewage inlet direction, is in a continuous fold shape, and the height of a single fold shape in the continuous fold shape is 5 mm. The straight-line distance between the apexes of adjacent pleats in the continuous pleats is 10 mm. The linear distance between adjacent filler layers is 100 mm.
The mixture of the treated water and the sludge flows into the mud-water separation zone, the water flows into the water outlet section and is discharged through the water outlet, the pipe diameter of the water outlet is 250mm, and the water flow speed of the water outlet is 1.15 m/s.
And water and sludge are separated through a plurality of mud-water separation layers in the mud-water separator, and the surface flow velocity of the mud-water separator is 5 m/h. The mud-water separation layer is an inclined plate. The horizontal inclination angle of the swash plate is 70 °. The sludge is precipitated in the sludge collecting section and falls into the bottom of the sludge collecting section, and the sludge is precipitated in the water outlet section and falls into the bottom of the sludge collecting section after passing through a plurality of sludge-water separation layers in the sludge-water separator, and then flows back to the water inlet area through the sludge outlet and the sludge inlet by the driving of the sludge reflux pump. The flow rate of the sludge reflux pump is 200m 3/h.
In the example, the treated object is sewage containing printing and dyeing wastewater, wherein the pollutants are represented by CODcr as 800mg/L and BOD5 as 150mg/L, and after the sewage is treated by the sewage anaerobic hydrolysis reactor, the CODcr is reduced to 600mg/L and the BOD5 is increased to 240mg/L, which shows that the pollutants of the refractory organic matters are partially degraded on one hand and biochemically increased on the other hand, thereby being beneficial to further degradation in the subsequent treatment process.
In the example, the surface load of the anaerobic hydrolysis tank is 3m/h, the hydraulic retention time is 2.5 hours, which is far lower than that of the conventional anaerobic hydrolysis tank, and the hydraulic retention time of the conventional anaerobic hydrolysis tank is more than 8 hours.
In this example, the total concentration of anaerobic sludge and biofilm on the packing in the anaerobic hydrolysis tank totaled up to 15000mg/L, whereas the sludge concentration or biofilm amount in conventional anaerobic hydrolysis tanks totaled only 5000 mg/L. Just because the increase of the microbial biomass increases the efficiency of the anaerobic hydrolysis reactor, reduces the reaction time, and further degrades the cost and occupies a land.
Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
the foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A sewage sludge anaerobic hydrolysis reactor is characterized by comprising a tank body (1), a water inlet area (2), a filler area (3) and a sludge-water separation area (4) are sequentially arranged in the tank body (1) along the sewage inlet direction, the water inlet area (2) is provided with a water inlet (21) and a sludge inlet (22), a plurality of packing layers (31) are arranged in the packing area (3), the sections of the packing layers (31) which are vertical to the sewage inlet direction are in a continuous fold shape, a mud-water separator (41), a mud-collecting section (42) and a water outlet section (43) are arranged in the mud-water separation zone (4), the mud-water separator (41) is respectively communicated with the mud collecting section (42) and the water outlet section (43), the water outlet section (43) is also provided with a water outlet (431), the sludge collecting section (42) is also provided with a sludge outlet (421), the sludge outlet (421) is communicated with the sludge inlet (22) through a pipeline.
2. The anaerobic sewage sludge hydrolysis reactor according to claim 1, wherein at least one water inlet branch pipe (23) is provided in the water inlet region (2), the water inlet branch pipe (23) is respectively communicated with the water inlet (21) and the sludge inlet (22), the water inlet branch pipe (23) is provided with at least one distribution pipe (24) for respectively mixing sewage through the water inlet (21) and sludge through the sludge inlet (22) and then inputting into the water inlet region (2) through the distribution pipe (24) and inputting into the filler region (3).
3. The anaerobic sewage sludge hydrolysis reactor as set forth in claim 1, wherein the packing layers (31) are parallel to each other with a gap between adjacent packing layers (31); the surface of the filler layer (31) is provided with a biological membrane.
4. The sewage sludge anaerobic hydrolysis reactor of claim 1, wherein the continuous corrugation comprises any one or more of the following conditions:
A1) The single fold shape in the continuous fold shapes is selected from one of wave shape, groove shape or sawtooth shape;
A2) The height (H) of a single wrinkle shape in the continuous wrinkle shapes is 1-10 mm;
A3) And the straight-line distance (L) between the peaks of adjacent corrugated shapes in the continuous corrugated shapes is 2-20 mm.
5. The anaerobic sewage sludge hydrolysis reactor as set forth in claim 1, wherein the sludge-water separator (41) comprises a plurality of inclined sludge-water separation layers (411), and the sludge-water separation layers (411) are parallel to each other with gaps between adjacent sludge-water separation layers (411).
6. The anaerobic sewage sludge hydrolysis reactor as recited in claim 5, wherein the horizontal inclination angle of the sludge-water separation layer (411) is 40-70 ° and the horizontal inclination angle is declined from the side near the water outlet (431) to the side near the sludge outlet (421); and the vertical distance (E) between the adjacent mud-water separation layers (411) is 20-100 mm.
7. The sewage sludge anaerobic hydrolysis reactor of claim 1, further comprising any one or more of the following conditions:
B1) The top end of the mud-water separator (41) is higher than the bottom end of the water inlet of the mud-water separation zone (4), and the top end of the mud-water separator (41) is higher than the water outlet (431);
B2) the bottom of the sludge collecting section (42) is provided with a sludge discharge port (422);
B3) A sludge return pump (5) is also arranged on a pipeline between the sludge outlet (421) and the sludge inlet (22);
B4) The bottom of the water outlet section (43) is inclined and is positioned on the same inclined plane with the bottom of the mud-water separator (41), the bottom of the water outlet section (43) is higher than the bottom of the mud-water separator (41), and the bottom of the mud-water separator (41) is higher than the bottom of the mud collecting section (42).
8. The method of using a sewage sludge anaerobic hydrolysis reactor according to any one of claims 1 to 7, comprising the steps of:
1) Respectively mixing sewage from a water inlet and sludge from a sludge inlet through a water inlet branch pipe, then flowing into a water inlet area of the tank body, and then flowing into a plurality of packing layers in a packing area through a distribution pipe to treat pollutants in the sewage;
2) the mixture of water after handling and mud flows into the mud-water separation zone and separates, water is discharged through the delivery port, mud falls into mud collection section bottom and/or falls into mud collection section bottom in the play water section through depositing behind a plurality of mud-water separation layers in mud-water separator through the sediment in mud collection section, and the district of intaking is flowed back through the mud import by the mud export again.
9. The method of using a sewage sludge anaerobic hydrolysis reactor according to claim 8, wherein step 1) includes any one or more of the following conditions:
C1) The pipe diameter of the water inlet is 50-1000mm, and the water flow speed of the water inlet is 1-3 m/s;
C2) The pipe diameter of the water inlet branch pipes is 50-300mm, the number of the water inlet branch pipes is 1-20, and the water flow speed of the water inlet branch pipes is 1-3 m/s;
C3) The pipe diameter of the distribution pipes is 20-100mm, the number of the distribution pipes is 4-100, and the water flow speed of the distribution pipes is 1-3 m/s;
C4) the surface flow velocity of the pool body is 1-5 m/h.
10. The method of using a sewage sludge anaerobic hydrolysis reactor according to claim 8, wherein step 2) includes any one or more of the following conditions:
D1) The surface flow velocity of the mud-water separator is 1-10 m/h;
D2) The pipe diameter of the water outlet is 50-1000mm, and the water flow speed of the water outlet is 0.5-2.5 m/s;
D3) The sludge is driven by the sludge reflux pump to flow back to the water inlet area from the sludge outlet through the sludge inlet; the flow rate of the sludge reflux pump is 10-1000 m 3/h.
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